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S. M. NIGKERSON & J. P'. TANSEY. Sash-Look. No. 228,471. Patented June8,1880.

L11/'engors UNTTT STATES PATENT rtree.

SPARROW M. NICKERSON AND JAMES P. TANSEY, OF CHICAGO, ILLINOIS; SAIDTANSEY ASSIGNOR TO SAID NICKERSON.

SASH-LOCK.

SPECIFICATION forming part of Letters Patent No. 228,471, dated June 8,1880.

Application filed October Q5, 1379.

To all whom it may concern:

Be it known that we, SPARROW M. NICKER- son and .latins P. TANsEY, or'Chicago, in the county of Cook and State of illinois, have inventedcertain new and useful Improvements in Sash-Locks, which. are fullydescribed in the following specilication, reference being had to theaccompanying drawings, in which- Figure l represents a vertical sectionof a window frame and sash with our improved sash-lock applied; Fig. 2,a detailed transverse section taken on line x oc, Fig. 1; Fig. 3, afront elevation of our improved fastening' for lthe upper sash of thewindow; Fig. 4, a rear elevation ofthe same 5 Fig'. 5, a sectionalelevation taken online i/ y, Fig. 3, Fig. 6, a front elevation of ourimproved fastener for the lower, sash 5 Fig. 7, a vertical section ofthe same, taken on line e e, Fig. 6; Fig. S, a perspective view, showinga modification in the construction and arrangement of some parts of thefastening; Fig. E), a rear elevation of the same; Fig. 10, a perspectiveview oi' one of the thumb-pieces shown in Fig. S; Fig'. ll, a plan viewof one of the dogs used with the same; and Fig. l2, side and endelevations of the holder by means of which the lower end of thefastening-rod is secured in place.

Our improvements herein described and shown relate to sash-fastenersbelonging to that class in which a rod is used, on which dogs or catchesare made to bite, and especially to that division of this class offastenings in which the dogs are fastened to the window-frame and therod to the sash-frame, so as to move with the latter.

Our invention consists in certain special devices and combinations ofdevices, all of which will be hereinafter more fully described, andpointed out definitely in the claims.

In the drawings, A represents a windowframe; B, the lower', and B theupper, sash. To each of the sash-frames is applied a rod, C, fitted in agroove, I) or b', in the edges of the respective sashes at one side ofthe window. These rods are inserted in the sash-frames by means of bendsc at each end thereof, and one end, preferablyr the lower, is held in akeeper of such construction that it may be readily removed therefrom.This keeperD is a tubular piece of metal. with a screw-thread formedupon its outer surface, by means of which it is held in a socketprovided for it in the sashframe. The tubular opening in thissocketpiece is adapted to receive the bent end of' the rod, in which itis readilyinserted, and from which it is easily removed, so that the rodmay be detached from the sash with great ease when the latter is removedfrom the window-frame, but is held in place when the sash is in place.

For the fastening for the upper sash we provide a shield or keeper, E,which is fastened to one side ol" the frame, and has a long arm, c,projecting out at one side thereof sufficiently to extend along the sideof the windowframe and'project outside of the stop-bead a thereon. Thisarm ends at its outer extremity in a thumb-piece. c. This keeper is letinto the side of the frame so as to be flush therewith. 1 Upon the outerface of thev body or main portion of the keeper a lug, F, projects,which is perforated, and receives the rod attached to the sash-frame, asshown in Fig. 3 of the drawings. Two smaller lugs, j', also project fromthe same face ofthe keeper on each side of the lug F, and are providedwith notches f', which receive the rod and steady the movement of thelatter. Just underneath the lug F is an opening, c2, in the keeper, andthe bent inner end of a dog, G, projects through this opening, and isprovided with a perforation, g, through which the sash-rod passes. Thisdog is arranged behind the keeper, as shown in Fig. 4 of the drawings,the inner end being held loosely between a curved or bent lug, H, on theback of the keeper just below the central opening therein, and astraight lug, 7L, above the saine, while the outer end rests upon a lug,h', at the outer end of the arm c, and is bent around in front oi' thelatter, terminating in a thumb-piece, g.

A spring, I, is arranged on the sash-rod between the biting' end of thedog and the lng F. In this fastening, as it is only necessary to securethe upper sash from falling-that is, fastened in any one directionit isonly necessary to have the one dog above described.

The principal operation is the same as usual in this style of fastening;but it will be noticed that the dog is not secured to the keeper in anyfixed position, but is loosely held thereto when the keeper is fastenedto the window-frame, and is permitted to have a certain amount of motionbesides the ordinary rocking motion which would be necessary to relievethe sash-rod from its bite. This permits the dog to lit itself to thesash-rod with readiness and with such latitude of motion that theoperation of the fastening is made certain, and does not depend upon acertain fixed position of the dog, as is the case when the latterl ismounted on a pivot in a fixed position. This also prevents the fasteningfrom becoming useless by the wea-rin g of the dog in service.

The fastening ofthe lower sash is constructed upon the same generalprinciple; but as it is desirable to be able to lock the lower sash inboth directions-that is, so that it can be neither raised norlowered-two dogs are employed, as shown in Figs. 6 and 7 of thedrawings, one being arranged above and one below the central lug, F, onthe keeper. The lug h on the back ofthe keeper is also arranged betweenthe inner ends of the dogs, and of course there are two bent or curvedlugs, H,

one above the upper dog and the other below the lower one, as shown inFig. 7 of the drawings. The spring I must also be duplicated.

le have also provided a device for preventing the sudden dropping of thesash when the bite of the dogs on the si sh-rod is released. This deviceis in the nature of a frictional stop operating on the rod to preventthc sash from dropping with its own weight, but at the same timeyielding to permit the latter to be drawn down upon the application ofslight force.

The stop consists of a conical washer, K, made of leather, rubber, orany other material, and placed in a conical seat, 7.7, in the lug of thekeeper, through which the sash-rod passes. This washer is perforated topermit the sash-rod to pass through it, and is arranged with its-smallerend downward, as shown in Fig. 7 ofthe drawings.

It will be evident that the downward movement of the sash-rod will tendto pull the washer into its conical scat, thereby pinching it up tighteron the rod, and so preventing the dropping of the sash. `At the sametime, as the washer is made of elastic material, it yields readily topermitthe sash to be pulled down with the exertion of but little force.The washer is held in place by the spring above it and between it andthe end of the dog. This frictional device may be applied to thefastening of either the upper or lower sash, as may be desired. Thechange necessary to apply it to the upper fastening, dcscribed above,will be obvious to any ordinary mechanic.

It may sometimes be desirable to arrange the outer ends of the dogs andkeepers within the stop-bead, and in Figs. 8 and 9 'We have shown amodification of our fastening adaptingit to this purpose.

It will be noticed that the outerl` ends of 7o the dogs are cut off andformed to suit separate thumb-pieces L, which, at their inner ends, areprovided with slits or recesses l, in which the outer ends of the dogsare loosely fitted. The outer ends of the dogs are intended to reachonly to the stop-bead.

The thumb -pieces are arranged at right angles to the ends of the dogs,as shown in Fig. S ot' the drawings, and are let into the inner edge ofthe stop-bead, and are held by a keeper, M, which is fastened to thelatter. This keeper M may have a thumb-stop, n, cast with it, with aprojection ou the back side thereof, connected by a loosejoint to theend ofthe keeper E.

The principle of construction and operation, it will be noticed,however, is precisely the same as when the fastening is constructed asabove described, and shown in the other figures ot' the drawing..

Other changes may be made in construction and arrangement of some partsot' the fastening to adapt it to different locations without changingthe principal operation, and the friction-stop may be employed with thisfastening or not, as may be desired, and may also be applied tofastcnings differing in construction from that herel described.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with a keeper attachcd to the window-frame andprovided with a lug, through which the sash-rod passes, of a pair ofdogs loosely connected to the keeper by means of lugs, substantially asdcscribed, and perforated at their inner ends to receive the sash-rod,whereby the windowsash is held and prevented from movement in eitherdirection, as set forth.

2. A keeper', E, provided, as described, with lugs F andfon its frontface and H h on its back face, as described, in combination with thedogs G, held loosely to the keeper by means of the back lugs and thesash-rod, a spring or sl'nings, I, and the sash-rod C, substantially asdescribed.

In a sash-fastener,a sash-rod, in combination with biting-dogs, throughwhich the rod passes, and a frietional stop acting on a rod to preventthe dropping of the sash when released from the dogs, substantially asdescribed.

4. The sash-rod C, in combination with the conical elastic washer,conical seat k for the latter on the keeper, and one or more dogs orlocking-catches, G, substantially as described.

SPARROVV M. NICKERSON. JAMES P. TANSEY. Vitnesses:

J. M. TEACHER, F. L. MIDDLETON.

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